Oil-well-pump attachment.



No. 797,672. v PATENTED AUG. 22 1905.

S. BRENNEN.

OIL WELL PUMP ATTACHMENT.

APPLICATION FILED MAE. 8, 1905.

UNITED STATES PATENT OFFICE.

SAMUEL DRENNEN, OF MONTPELIER, INDIANA, ASSIGNOR, BY MESNE ASSIGNMENTS, OF ONE-HALF TO GEORGE V. GRIMES COMPANY,

OF BLUFFTON, INDIANA.

OIL-WELL-PUIVIP ATTACHMENT.

Patented Aug. 22, n o5.

Application filed March 8, 1905. Serial No. 249,080.

l?) all zul/1,077?, it 7uur/y concern,.-

Be it known that I, SAMUEL DEENNEN, a citizen of the United States, residing at Montpelier, in the county of Blackford and State of Indiana, have invented certain new and useful Improvements in Oil-Well-Pump Attachments, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to an improved means for driving oil-well pumps; and it consists in the means hereinafter described, and more particularly pointed out in the claims.

The object of this invention is to provide a means wherebyT the shafts or plunger-rods of oil-well pumps may be operated to reciprocate in a vertical line without the use of a guiding means and whereby a regular and easy movement of the piston is obtained, to provide means whereby the length of the stroke of the shafts or plunger-rods of the pumps may be varied, and, finally, to construct such means that the same may be readily disconnected from the shaft or plunger-rod of a pump and turned or moved in a position out of the way of the pump to which it was connected, thereby affording ample room to conveniently remove the shaft or plunger-rod from and out of the pump when required without dismantling the attachment for driving the same. l attain these objects by means of the apparatus illustrated in the accompanying drawings, in which similar numerals of reference designate like parts throughout the several views.

Figure 1 is a side sectional elevational view of my apparatus, taken through the line A B. (See Fig. 2.) Fig. 2 is a broken end elevational view of the top portion of the same looking in the direction of the arrow a. (See Fig. 1.) Fig. 3 is an enlarged detail broken view of the coupling means whereby the flexible band of the apparatus is connected to the shaft or plunger-rod of the pump and looking in the direction of the arrow I). (See Fig. l.) Fig. 4 is a detail sectional view of the same, taken through the line C D. (See Fig. 3.) Fig. 5 is an enlarged detail broken view of the end portion of the connecting-strap of the apparatus, and Fig. 6 is an enlarged detail view of the reinforcing coupling-cap.

The triangularly-formed supporting-frame of the apparatus is preferably constructed of wood and comprises the vertically-extending uprights 1 and 2, the rear braces 3, and the sills 4, which are suitably ljointed and connected together. The uprights 1 and 2 are preferably connected by cross-braces 5 and 6, which are stiffened by the diagonal braces 7, and all the said braces are properly jointed and bolted or spiked together to form a rigid and substantial frame structure. Bearing-plates S are fitted and secured to the top ends of the side frames and are supported at their overhanging ends by the trusses f).

The rim of the mutilated pulley 1() is rather less than a semicircle, embracing an angle of one hundred and lifty degrees, and. on one side, preferably the upwardly-extending side ofthe mutilated pulley, is formed. the integral lever portion 11, in which are formed a series of connecting-holes .12, arranged in a row at regular or suitable intervals apart.

A power-rope 13 is connected at one end to a power mechanism, whereby a reciprocating motion is imparted to it, and on the other end of the rope 13 is provided a socket 14, having a connecting-eye 15, in which is linked a clevis 16. 'l`he.bolt ends of the clevis 16 embrace the lever 11 on each. side of it, and the connecting pin or bolt 17 passes through said clevis and one of the series of connecting-holes 12, so that when it is required to give the mutilated pulley the greatest range of oscillation the clevis 16 connected to the lever at that connectinghole nearest the center of oscillation of the mutilated pulley, as shown connected in Fig. 1 and when the least range of the mutilated pulley 10 is required the clevis 16 is connected at its farthest distant connecting-hole from the axis of oscillation of the mutilated pulley.

The lever 11 extends beyond the periphery of the mutilated pulley 10, and in the angle formed by said lever and the periphery of the mutilated pulley 10 are the side lugs 1S, which are formed integral with said lever and the periphery of said mutilated pulley 10, between which the clevis 16 is situated.

The mutilated pulley 10 is secured on its supporting-shaft 19, and the supportingshaft 19 is supported at each end in its bearings 20, secured on the plates 8 of the supporting-framework.

A strap-clevis 2l is provided with an eye 2 2, which is bored to receive a connectingpin 23, whereby the said clevis 2l is h ingedly vconnected to the lugs 1S. A connectingstrap 24, which is preferably of a tempered flexible steel, is connected by rivets or other suitable means of connection to the strapclevis 2l at its top end and has its bottom depending end removably connected to the top end of the shaft or plunger-rod 25 of the pump 26 by a clamping-coupling, hereinafter described, which latter shaft is arranged to be reciprocated in the pump 26, whereby the oil is pumped from the well.

The lower depending end of the strap 24 is provided with a series of staple-receiving holes 27, which are adapted to receive the ends of the staples 2S. A backing-cap 29 is provided with staple receiving holes 30, which are arranged so that when the cap 29 is placed flatwise against the end of the strap 24 the holes thereof will fall directly opposite or register with those of the strap 24. To connect the top end of the shaft or plungerrod 25 of the pump to the strap 24, the end of the said shaft or rod is applied to the strap 24, so as to extend centrally thereof, and the staples 2S are placed in the holes 27 of the strap to surround the shaft 25. The holes 30 of the backing-cap 29 are then applied to the ends of the staples 28, and the tighteningnuts 3l are then tightly screwed on the clamping-staples 2S to securely clamp the top end of the shaft 25 to the strap 24.

It will be observed that as the frame is situated in position relatively to the pump the periphery of the mutilated pulley will be tangent with the vertical line of the shaft 25, so that when themutilated pulley 10 is oscillated the pull on the pump-shaft 25 will will always be at all points of the oscillation or movement of the mutilated pulley 10 in a direct vertical straight line.

Now in an oil-welliield it is very frequently necessary to remove the pump-plunger for repair and either repair the same quickly or substitute a new plunger while the other removed plunUer is undergoing repair, which change it is always necessary to make rapidly. By the use of the apparatus described this operation is very materially facilitated. l/Vhen it is desired to remove the shaft or plunger-rod 25, the clamping-nuts 31 of the staples 28 are first loosened, and the strap can then be readily disengaged from the rod 25. The mutilated pulley 10 is now turned around and secured in the position shown in dotted lines (see Fig. 1) in order to give ample room to remove the shaft or plunger-rod 25, which shaft or rods in pumps of this character are frequently and necessarily very long, the length varying according to the depths of the pumps in the wells. The mechanism being completely out of the way of the operators, the shaft or plunger-rod 25 is then accessible at all points.

Having thus fully described this my invention, what l claim as new and useful, and desire to cover by Letters Patent of the United States therefor, is-

l. ln an oil-well apparatus, the combina-v tion with a pump-shaft, a mutilated pulley the periphery of which is less than a semicircle and tangentially situated relatively to the line of the shaft of the pump, lugs formed integral with said pulley at the top end thereof, a flexible connecting-strap hingedly connected at its upper end to'said lugs, and a removable connecting-coupling situated at the bottom end of said strap, of a reciprocating means, a lever integral on and situated at one side of said mutilated pulley, extending radially from the center of and beyond the periphery thereof and provided with a series of clevis-pin-receiving holes arranged at intervals or gradations along its length, a cable, a clevis and a clevis-pin connecting said clevis and said lever, said reciprocating means connected to said cable, and a suitable triangularly-forined supporting-frame comprising a vertically-extending forward portion, a backward or rear inclined portion and a bottom connecting or sill portion for supporting said pulley.

2. ln an oil-well apparatus, the combination with a pump-shaft, a mutilated pulley the periphery of which is less than a semicircle and tangentially situated relatively to the line of the shaft of the pump, lugs formed integral with said pulley at the top end thereof, a fiexible connecting strap hingedly connected at its upper end to said lugs, and a removable connecting coupling, comprised of a reinforcing-plate and a pair of clamping-staples, situated at the bottom end of said strap, of a reciprocating means, a lever integral on and situated at one side of said mutilated pulley, extending radially from the center of and beyond the periphery thereof and provided with a series of clevispin-receiving holes arranged at intervals or gradations along its length, a cable, a clevis and a clevis-pin connecting said clevis and said lever, said reciprocating means connected to said cable, and a suitable triangularlyformed supporting-frame comprising a vertically-extending forward portion, a backward or rear inclined portion and a bottom connecting or sill portion for supporting said pulley.

ln testimony whereof l affix my signature in presence of two witnesses.

SAMUEL DRENNEN.

/Vitnesses z JAMES WEST, W. C. PERFECT. 

